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合成氨厂通常使用的造气吊煤围栏是用圆钢焊接而成的。这种围栏在吊煤人员稍有操作失误时,煤斗上提过程中碰着围栏,将
Ammonia plant commonly used gas hanging coal fence is made of round steel welded together. This fence in the coal handling personnel slightly wrong operation, the process of raising the coal bucket hit the fence, the